Photo of backswimmer, side view

    Backswimmers

    About 32 North American species in the family Notonectidae
    Bluegill male in spawning colors, side view photo with black background

    Bluegill

    Lepomis macrochirus
    Bowfin side view photo with black background

    Bowfin

    Amia calva
    Brook silverside side view photo with black background

    Brook Silverside

    Labidesthes sicculus
    Gray, speckled, translucent gelatinous blob cut in half to show structure

    Bryozoans (Moss Animals)

    Freshwater species in the phylum Bryozoa
     Central mudminnow side view photo with black background

    Central Mudminnow

    Umbra limi
    exclamation mark

    Endangered

    Channel catfish side view photo with black background

    Channel Catfish

    Ictalurus punctatus
    Photo of two Chinese mystery snails, on a white background, with a ruler nearby for scale.

    Chinese Mystery Snail

    Cipangopaludina chinensis malleata (syn. Bellamya chinensis)
    invasive icon

    Invasive

    Photo of crane fly larva

    Crane Fly Larvae

    There are over 500 species of crane flies in North America.
    Cypress minnow side view photo with black background

    Cypress Minnow

    Hybognathus hayi
    exclamation mark

    Endangered

    Monkey Face Mussel

    Freshwater Mussels

    Bivalve molluscs in order Unionoida
    Golden shiner male, side view photo with black background

    Golden Shiner

    Notemigonus crysoleucas
    Harlequin darter side view photo with black background

    Harlequin Darter

    Etheostoma histrio
    exclamation mark

    Endangered

    No photo available

    Hydras

    Various species in the genus Hydra
    Photo of a midge fly larva crawling on a rock in an aquarium

    Midge Fly Larvae

    Nearly 1,100 species in North America
    Photo of a painted devil crayfish standing on a sandy substrate

    Painted Devil Crayfish

    Lacunicambarus ludovicianus
    Photo of a paintedhand mudbug carefully arranged against a black background

    Paintedhand Mudbug

    Lacunicambarus polychromatus
    Photo of a pink planarian on a rock.

    Turbellarians (Planarians; Free-Living Flatworms)

    Species in genera Dugesia, Planaria, etc.
    White crappie male, side view photo with black background

    White Crappie

    Pomoxis annularis